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dc.contributor.author
Soto, G.
dc.contributor.author
Nava, E.
dc.contributor.author
Rosas, M.
dc.contributor.author
Fuenmayor, M.
dc.contributor.author
Gonzalez, I. M.
dc.contributor.author
Meira, Gregorio Raul
dc.contributor.author
Oliva, H. M.
dc.date.available
2017-10-19T18:37:47Z
dc.date.issued
2004-02
dc.identifier.citation
Soto, G.; Nava, E.; Rosas, M.; Fuenmayor, M.; Gonzalez, I. M.; et al.; Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology; Wiley; Journal of Applied Polymer Science; 92; 3; 2-2004; 1397-1412
dc.identifier.issn
0021-8995
dc.identifier.uri
http://hdl.handle.net/11336/26832
dc.description.abstract
In this study, we investigated the synthesis of high-impact polystyrene through a series of (batch and bulk) polymerizations of styrene in the presence of 6 wt % polybutadiene. The reactions with rubber involved three stages: dissolution, prepolymerization, and finishing. The prepolymerizations were isothermal (at 70 C) and nonisothermal (with an initial heating period from 70 to 120 C). Purely thermal reactions were compared with chemically initiated polymerizations involving terf-butyl peroctoate (TBPO), 2,2´-azobisisobutyronitrile (AIBN), and their mixtures. Most prepolymerizations involved a stirring rate of 125 rpm. The particle morphology was mainly determined by the evolution of the grafting efficiency, stirring rate, and system viscosity during prepolymerization. In the nonisothermal prepolymerizations with pure AIBN, the grafting efficiency was lower than in equivalent prepolymerizations without an initiator, yielding unstable emulsions and a poor final morphology. In the nonisothermal prepolymerizations with pure TBPO, a large amount of graft copolymer was produced early in the prepolymerization, yielding a submicrometer core-shell morphology. The particle size and morphology could be controlled by the appropriate adjustment of the recipe and the prepolymerization conditions.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Otras Ingeniería Química
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Ingeniería Química
dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
dc.title
Bulk polymerization of styrene in the presence of polybutadiene: effect of initiator type and prepolymerization conditions on particle morphology
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-10-17T14:09:36Z
dc.journal.volume
92
dc.journal.number
3
dc.journal.pagination
1397-1412
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Hoboken
dc.description.fil
Fil: Soto, G.. Universidad del Zulia; Venezuela
dc.description.fil
Fil: Nava, E.. Universidad del Zulia; Venezuela
dc.description.fil
Fil: Rosas, M.. Universidad del Zulia; Venezuela
dc.description.fil
Fil: Fuenmayor, M.. Universidad del Zulia; Venezuela
dc.description.fil
Fil: Gonzalez, I. M.. Universidad del Zulia; Venezuela
dc.description.fil
Fil: Meira, Gregorio Raul. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; Argentina
dc.description.fil
Fil: Oliva, H. M.. Universidad del Zulia; Venezuela
dc.journal.title
Journal of Applied Polymer Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1002/app.13679
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/app.13679/abstract
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